This tutorial will show you how to setup a cool, dynamic wallpaper for your computer based upon XPlanet. The image to left is the final result of this how-to; notice the cloud map and the daylight, which are both periodically updated to match real-time cloud data and sunlight. You can chose to do the same [...]
Monday, August 2, 2010
If you’ve used Linux for a while you’ve probably learned about cron, which is the system service responsible for executing scheduled tasks. Cron runs in the background, and helps keep your computer running. At scheduled times, it launches programs to rotate log files, check for software updates, and perform other housekeeping jobs. You can also [...]
Monday, July 26, 2010
I recently covered three utilities you can use to monitor your system resources in Linux. One of those programs, iftop gives you information about the network traffic of your machine. In this article I’ll show the in-depth usage of iftop, as well as another program called nethogs that was recommended by a reader. With these [...]
Wednesday, July 21, 2010
Most Linux users are familiar with the top command. Top shows you a list of processes on your system and provides a ton of useful information such as their CPU usage and owner. Unfortunately, this isn’t always enough data and many people don’t know where to turn next. This article covers three performance monitoring applications [...]
Wednesday, July 7, 2010
I’ve previously written about how to securely and permanently delete files in Linux and Windows. The programs I mentioned in those tutorials were all command-line baed, but this tutorial will show you how to add a secure-delete option to the contextual menu in Ubuntu and Fedora Linux. Install the Nautilus Actions Configuration utility First, install [...]
Saturday, June 26, 2010
Sometimes it is necessary to find out which package is responsible for a particular file on a Linux machine. This article explains how to identify the package that owns a file on Ubuntu or Fedora Linux (it applies to any distribution using deb or RPM, so it will also work in Debian, RedHat, etc…) Deb-based [...]
Thursday, June 10, 2010
One of the most frustrating problems a network administrator can come across is an IP address conflict, when two or more machines on a network try to use the same IP. The result is typically that some packets on the network go to one machine, and some packets go to the other – leading to [...]
Sunday, June 6, 2010
Many power users have multiple computers setup in their office or on their desks, which typically results in either multiple keyboards, mice, and monitors, or the use of a KVM switch to change between each machine individually. There are downsides to both of these solutions; multiple keyboards take up lots of space and can be [...]
Friday, June 4, 2010
If you make a typo on the command line in Ubuntu, or if you type the name of a command that doesn’t exist, the system will automatically provide you with a list of commands that are similar to what you entered; or, if the command exists but the package it belongs to is not installed, [...]
Thursday, March 25, 2010
Introduction Note: this is a Windows equivalent of my popular article, Howto Delete Files Permanently and Securely in Linux. When you normally delete a file in Windows, you aren’t actually making that file disappear from your hard drive — not even when you empty it from the recycle bin. This is because deleting a file doesn’t actually overwrite it [...]
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Wednesday, August 4, 2010
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